EP 4303514 A1 20240110 - METHOD FOR MANUFACTURING CEMENT CLINKER AND CEMENT PLANT
Title (en)
METHOD FOR MANUFACTURING CEMENT CLINKER AND CEMENT PLANT
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ZEMENTKLINKER UND ZEMENTANLAGE
Title (fr)
PROCÉDÉ DE FABRICATION DE SCORIE DE CIMENT ET CIMENTERIE
Publication
Application
Priority
EP 22183879 A 20220708
Abstract (en)
Method for manufacturing cement clinker comprising the steps: preheating a raw meal (rm) in a first preheater (1) using kiln off-gas to provide a partially preheated raw meal, preheating the partially preheated raw meal in a second preheater (2) to provide preheated raw meal, precalcination of the pre-heated raw meal in a calciner (4) being a fluidized bed reactor or entrained flow reactor by burning fuel (f) with oxygen (o) and recirculated calciner exhaust gas instead of air to provide a precalcined raw meal wherein at least 2 mbar overpressure are adjusted in the calciner (4), transferring the precalcined raw meal to a rotary kiln (3) for sintering to provide the cement clinker (c), cooling the cement clinker (c), and capturing carbon dioxide (CO<sub>2</sub>) from a calciner exhaust gas in a carbon dioxide purification unit (6).
IPC 8 full level
C04B 7/36 (2006.01); F27B 7/20 (2006.01); C04B 7/43 (2006.01)
CPC (source: EP)
C04B 7/364 (2013.01); C04B 7/365 (2013.01); C04B 7/367 (2013.01); C04B 7/434 (2013.01); C04B 7/436 (2013.01); C04B 7/45 (2013.01); C04B 7/475 (2013.01); F27B 7/2041 (2013.01); F27B 7/205 (2013.01)
Citation (applicant)
- FR 2797628 A1 20010223 - CEMEX CENTRAL S A DE C V [MX]
- CA 2313862 A1 20010119 - CEMEX CENTRAL S A DE C V [MX]
- US 2011168060 A1 20110714 - KUPPER DETLEV [DE]
- WO 2005026070 A1 20050324 - ALSTOM SWITZERLAND LTD [CH], et al
- M. GIMENEZ ET AL.: "The oxycombustion option", INT. CEMENT REVIEW, May 2014 (2014-05-01)
- J. XU ET AL.: "Effect of fluidized bed calcinatioin on cement clinker...", CONSTR. BUILD. MAT., 2021
Citation (search report)
- [XYI] US 2015183686 A1 20150702 - FRIE SEBASTIAN [DE], et al
- [XYI] EP 3738939 A1 20201118 - HEIDELBERGCEMENT AG [DE]
- [YA] EP 4011850 A1 20220615 - HOLCIM TECHNOLOGY LTD [CH]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 22183879 A 20220708; EP 2023062142 W 20230508